HAMEG HM 8012 User manual

Brand: HAMEG

Model: HM 8012

Category: Multimeters

Type: User manual

Service-Manual

4¾-Digit Multimeter

HM8012

2Subject to change without notice

General information regarding the CE marking

HAMEG instruments fulﬁ ll the regulations of the EMC directive. The

conformity test made by HAMEG is based on the actual generic- and

product standards. In cases where different limit values are applicable,

HAMEG applies the severer standard. For emission the limits for

residential, commercial and light industry are applied. Regarding the

immunity (susceptibility) the limits for industrial environment have

been used.

The measuring- and data lines of the instrument have much inﬂ uence

on emmission and immunity and therefore on meeting the acceptance

limits. For different applications the lines and/or cables used may

be different. For measurement operation the following hints and

conditions regarding emission and immunity should be observed:

1. Data cables

For the connection between instruments resp. their interfaces and

external devices, (computer, printer etc.) sufﬁ ciently screened cables

must be used. Without a special instruction in the manual for a reduced

cable length, the maximum cable length of a dataline must be less than

3 meters and not be used outside buildings. If an interface has several

connectors only one connector must have a connection to a cable.

Basically interconnections must have a double screening. For IEEE-bus

purposes the double screened cables HZ72S and HZ72L from HAMEG

are suitable.

2. Signal cables

Basically test leads for signal interconnection between test point and

instrument should be as short as possible. Without instruction in the

manual for a shorter length, signal lines must be less than 3 meters

and not be used outside buildings.

Signal lines must screened (coaxial cable - RG58/U). A proper ground

connection is required. In combination with signal generators double

screened cables (RG223/U, RG214/U) must be used.

3. Inﬂ uence on measuring instruments.

Under the presence of strong high frequency electric or magnetic ﬁ elds,

even with careful setup of the measuring equipment an inﬂ uence of

such signals is unavoidable.

This will not cause damage or put the instrument out of operation. Small

deviations of the measuring value (reading) exceeding the instruments

speciﬁ cations may result from such conditions in individual cases.

HAMEG Instruments GmbH

Die HAMEG Instruments GmbH bescheinigt die Konformität für das Produkt

The HAMEG Instruments GmbH herewith declares conformity of the product

HAMEG Instruments GmbH déclare la conformite du produit

Bezeichnung / Product name / Designation:

Multimeter / Multimeter /

Multimètre

Typ / Type / Type: HM8012

mit / with / avec: –

Optionen / Options / Options: –

mit den folgenden Bestimmungen / with applicable regulations / avec les directives

suivantes

EMV Richtlinie 89/336/EWG ergänzt durch 91/263/EWG, 92/31/EWG

EMC Directive 89/336/EEC amended by 91/263/EWG, 92/31/EEC

Directive EMC 89/336/CEE amendée par 91/263/EWG, 92/31/CEE

Niederspannungsrichtlinie 73/23/EWG ergänzt durch 93/68/EWG

Low-Voltage Equipment Directive 73/23/EEC amended by 93/68/EEC

Directive des equipements basse tension 73/23/CEE amendée par 93/68/CEE

Angewendete harmonisierte Normen / Harmonized standards applied / Normes

harmonisées utilisées

Sicherheit / Safety / Sécurité

EN 61010-1:2001 (IEC 61010-1:2001)

Überspannungskategorie / Overvoltage category / Catégorie de surtension: II

Verschmutzungsgrad / Degree of pollution / Degré de pollution: 2

Elektromagnetische Verträglichkeit / Electromagnetic compatibility /

Compatibilité électromagnétique

Hersteller HAMEG Instruments GmbH KONFORMITÄTSERKLÄRUNG

Manufacturer Industriestraße 6 DECLARATION OF CONFORMITY

Fabricant D-63533 Mainhausen DECLARATION DE CONFORMITE

EN 61326-1/A1 Störaussendung / Radiation / Emission:

Tabelle / table / tableau 4; Klasse / Class / Classe B.

Störfestigkeit / Immunity / Imunitee: Tabelle / table / tableau A1.

EN 61000-3-2/A14 Oberschwingungsströme / Harmonic current emissions / Émissions

de courant harmonique: Klasse / Class / Classe D.

EN 61000-3-3 Spannungsschwankungen u. Flicker / Voltage ﬂ uctuations and ﬂ icker /

Fluctuations de tension et du ﬂ icker.

Datum /Date /Date

22.07.2004

Unterschrift / Signature /Signatur

G. Hübenett

Produktmanager

General information regarding the CE marking

Subject to change without notice

Content

Declaration of Conformity 2

General information regarding the CE-marking 2

4¾ Digit Programmable Multimeter HM8012 4

Speciﬁ cations 5

Control elements 6

Function test 7

Calibration 8

Circuit and layout diagrams 9

4Subject to change without notice

HM8012

4 -digit display with 50,000 counts, basic accuracy 0.05 %

Automatic and manual range selection

Max. resolution 10 μV, 0.01 dBm, 10 nA, 10 mΩ, 0.1 °C/°F

Offset function / relative value measurement in basic

measurement functions

Input impedance ›1 GΩ (0.5 V and 5 V DC range)

RS-232 interface

PC software for control and data logging

Mainframe HM8001-2 required for operation

4 -Digit Programmable Multimeter

HM8012

WDM8012 Software

(included)

HZ15 (included)

WDM8012 Software

(included)

Subject to change without notice

Specifications

4 -Digit programmable Multimeter HM8012

Valid at 23 °C after a 30 minute warm-up period

DC voltage

Measurement ranges: 500 mV, 5 V, 50 V, 500 V, 600 V

Resolution: 10 μV, 100 μV, 1m V, 10m V, 100m V

Accuracy:

5 V, 500 V, 600 V: ±(0.05 % of reading +0.002% of full scale)

500 mV, 50 V: ±(0.05 % of reading + 0.004% of full scale)

Overload protection:

V/Ω/T°/dB/ to COM and to chassis:

850 Vpat max. 60 Hz or 600 VDC

COM against chassis: 250 Vrms at max. 60 Hz or 250 VDC

Input resistance:

50 V, 500 V, 600 V: 10 MΩ II 90 pF

500 mV, 5 V: › 1 GΩ II 90 pF

Input current: 10 A

CMRR1): ≥100 dB (50/60Hz ± 0.5 %)

SMRR2):≥60 dB (50/60 Hz ± 0.5 %)

dB Mode

Accuracy: ±(0.02dB+2 digits) (display › -38.7 dBm)

Resolution: 0.01 dB above 18 % of rating

DC current

Measurement ranges: 500 μA, 5 mA, 50 mA, 500 mA, 10 A

Resolution: 10 nA, 100 nA, 1 μA, 10 μA, 1 mA

Accuracy:

0.5-500 mA: ±(0.2 % of reading + 0.004% of full scale)

10 A: ±(0.3 % of reading + 0.004% of full scale)

Voltage drop:

10 A range: 0.2 V max.

500 mA range: 2.5 V max.

other ranges: 0.7 V max.

AC voltage

Measurement ranges: 500 mV, 5 V, 50 V, 500 V, 600 V

Resolution: 10 μV, 100 mV, 1 mV, 10 mV, 100 mV

Accuracy 0.5-50 V:

40 Hz-5 kHz: ± (0.4 % of reading + 0.07% of full scale)

20 Hz-20 kHz: ± (1 % of reading + 0.07% of full scale)

Accuracy 500 V and 600 V:

40 Hz-1 kHz: ± (0.4 % of reading + 0.07% of full scale)

20 Hz-1 kHz: ± (1 % of reading + 0.07% of full scale)

Overload protection:

V/Ω/T°/dB/ to COM and to chassis:

850 Vpat max. 60 Hz or 600 VDC

COM against chassis: 250 Vrms at max. 60 Hz or 250 VDC

Input impedance

AC mode: 1 MΩ II 90 pF

AC + DC mode: 10 MΩ II 90 pF

Bandwidth at –3 dB: 80 kHz typical

dB mode: 20 Hz - 20 kHz

Accuracy

–23.8 dBm to 59.8 dBm: ±0.2 dBm

Resolution: 0.01 dB above 9 mV

CMRR1):≥60 dB (50/60 Hz ± 0.5 %)

Crest factor: 7 max.

AC current

Measurement ranges: 500 μA, 5 mA, 50 mA, 500 mA, 10 A

Resolution: 10 nA, 100 nA, 1 μA, 10 μA, 1 mA

Accuracy:

0.5 - 500 mA: ±(0.7 % of reading + 0.07% of f.s.)40 Hz - 5 kHz

10 A: ±(1 % of reading + 0.07% of full scale)

AC + DC measurements

As shown for AC + 25 digits

Resistance

Measurement ranges: 500 Ω, 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 50 MΩ

Resolution: 10 mΩ, 100 mΩ, 1 Ω, 10 Ω, 100 Ω, 1 kΩ

Accuracy:

500 Ω to 500 kΩ: ±(0.05 % of reading + 0.004% of f.s.+50 mΩ)

5 MΩ to 50 MΩ: ±(0.3 % of reading + 0.004% of full scale)

Input protection max. 300 Vrms

Measurement current: 500 Ω-5 kΩ range: 1 mA

50 kΩ range: 100 μA

500 kΩ range: 10 μA

5-50 MΩ range: 100 nA

Measurement voltage: 10 V typical for open inputs, depending on the

value of resistance to be measured. Negative polarity of measurement

voltage is across common terminal.

Temperature

2-wire resistance measurement with linearization for PT100 sensors as

per standard EN60751

Range: –200° C to +500° C

Resolution: 0.1° C

Measurement current: approx. 1 mA

Display: in ° C, ° F

Accuracy: ± 0.1° C from – 200°C to + 200° C

± 0.2° C from 200°C to 500° C

(exception: sensor tolerance)

Temperature coefficient: (reference 23°C)

V = 500 mV, 50 V 30 ppm/° C

600 V range 80 ppm/° C

other ranges 20 ppm/° C

V ~ 600 V range 80 ppm/° C

other ranges 50 ppm/° C

mA all ranges 200 ppm/° C

mA~all ranges 300 ppm/° C

Ω 5 MΩ, 50 MΩ ranges 200 ppm/° C

other ranges 50 ppm/° C

Miscellaneous

Power supply (from mainframe):

+ 5 V 300 mA

~26 V 140 mA

Operating temperature: + 10° C to + 40° C

Max. relative humidity: 80 % (without condensation)

Dimensions ( W x H x D) (without 22-pole flat plug):

135 x 68 x 228 mm

Weight: approx. 0.5 kg

1) Common mode rejection ratio 2) Serial mode rejection ratio

Accessories supplied: Operator’s Manual, HZ15 PVC test leads, HM8012: +

Software CD and interface cable

Optional accessories: HZ10 Silicone test leads, HZ812 PT100 Temperature Sensor

HM8012E/140705/ce · Subject to alterations · © HAMEG Instruments GmbH · ® Registered Trademark · DQS-certified in accordance with DIN EN ISO 9001:2000, Reg.-No.: DE-071040 QM

HAMEG Instruments GmbH · Industriestr. 6 · D-63533 Mainhausen · Tel +49 (0) 6182 800 0 · Fax +49 (0) 6182 800 100 · www.hameg.com · info@hameg.com

A Rohde & Schwarz Company

www.hameg.com

6Subject to change without notice

Control Elements

DISPLAY (7-segment LED + LED)

The digital display shows the measurement value with 4¾ digit

resolution, in which the largest ﬁ gure is used up to “5”. It will

also display various warning messages. The measurement

value will be displayed with decimal points and polarity sign.

For DC measurement, a minus sign will appear in front of the

ﬁ gures when the positive polarity of the measured value is

connected to the COM input .

(LED)

Indicator denoting validation of the audible continuity test si-

gnal. When used as an ohmmeter, the audible signal triggers

when the measured resistance value is less than 0.1% of the

range or 50 counts. For other functions, the indicator is hid-

den.

BEEP (pushbutton)

Pushbutton for activating the audible signal.

A (safety terminal for 4 mm banana plugs)

Connection (high potential) for DC and AC current measure-

ments in the 10 A range in conjunction with the COM input

(low potential).

Current in excess of 10 A (max. 20 A) must not be

applied for a period exceeding 30 s, otherwise the

internal measurement resistor thermal device will

blow.

mA (safety terminal for 4 mm banana plugs)

Connection (high potential) for DC and AC current measure-

ments up to 500 mA in conjunction with COM input (low po-

tential). The input is fuse-protected.

HOLD (LED)

Indicator denoting that the displayed value has been frozen.

The function can be activated using key . Deactivation is by

pressing the HOLD/OFFSET key.

COM (safety terminal for 4 mm bana plugs)

The COM terminal (low potential) is the common connector for

all the measurement functions to which the potential close to

the ground of the measured quantity will be applied.

For safety reasons, the voltage across this ter-

minal compared to the case (guard wire, ground)

shall be 250 V at most.

OFFSET (LED)

Indicator denoting that the displayed value is a relative measu-

rement. The displayed value corresponds to the input value

less the value present on the display during initial action on

the HOLD/OFFSET key . Activate this function by means of a

second press on the HOLD/OFFSET key.

V/Ω/T°/dB/

(safety terminal for 4 mm banana plugs)

Connection (high potential) for measurements of voltages,

resistances, temperatures and diode junctions in conjunction

with the COM input (safety terminal).

For safety reasons, the voltage across this ter-

minal compared to the case (guard wire, ground)

shall be 600 VDC at most.

HOLD/OFFSET (pushbutton)

Pushbutton for validating the HOLD or OFFSET functions. Pres-

sing the key the ﬁ rst time will freeze the front panel display.

The HOLD indicator then lights up. The AUTO, AC-DC, BEEP,

 and  keys are inoperative.

A second press gives access to the relative mode. The value

memorized by the HOLD function is then subtracted from each

measurement before being displayed. The OFFSET indicator

lights up.

A third press will freeze the relative value. The HOLD and

OFFSET indicators light up. A fourth press will delete the

HOLD and OFFSET mode.

 (pushbutton)

Pushbutton for changing to a lower range. On each press, the

new range is displayed ﬂ eetingly on the display in code form

(L1 for lowest range, L2 for second range, etc.).

 (pushbutton)

Pushbutton for changing to a higher range. Each time pressed,

the new range will be displayed ﬂ eetingly on the display in code

form (L1 for lowest range, L2 for second range, etc.).

Subject to change without notice

a) DC voltage ranges

b) AC voltage ranges

(1) = 40 Hz to 5 kHz

(2) = 20 Hz to 20 kHz

(3) = 40 Hz to 1 kHz

(4) = 20 Hz to 1 kHz.

c) DC current ranges

d) AC current ranges (f = 400 Hz)

e) Resistor ranges

Function Test

No.

Range Reference Display limits

(+23 °C)

1 500 200.00 199.83 - 200.17

2 5 k 2.0000 k 1.9989 - 2.0011

3 50 k 20.000 k 19.989 - 20.011

4 500 k 200.00 k 199.89 - 200.11

5 5 M 2.0000 M 1.9939 - 2.0061

6 50 M 20.000 M 19.393 - 20.061

No.

Range Reference Display limits

(+23 °C)

1 500 μA 250.00 μA 249.48 - 250.52

2 5 mA 2.5000 mA 2.4948 - 2.5052

3 50 mA 25.000 mA 24.948 - 25.052

4 500 mA 250.00 mA 249.48 - 250.52

5 10 A 1.800 A 1.794 - 1.806

No.

Range Reference Display limits

(+23 °C)

1 500 μA 250.00 μA 247.9 - 252.1

2 5 mA 2.5000 mA 2.479 - 2.521

3 50 mA 25.000 mA 24.79 - 25.21

4 500 mA 250.00 mA 247.9 - 252.1

5 10 A 1.800 A 1.775 - 1.825

No. Range Reference Display limits

(+23 °C)

1 500 mV 250 mV 249.85 - 250.15

2 5 V 2.5 V 2.4986 - 2.5014

3 50 V 25. V 24.985 - 25.015

4 500 V 250 V 249.86 - 250.14

5 600 V 550.00 V 549.7 - 550.3

No. Range Reference Display limits

(+23 °C)

1 500 mV 250 mV (1) 248.65 - 251.35

(2) 247.15 - 252.85

2 5 V 2.5 V (1) 2.4865 - 2.5135

(2) 2,4715 - 2.5285

3 50 V 25 V (1) 24.865 - 25.135

(2) 24.715 - 25.285

4 500 V 250 V (3) 248.65 - 251.35

(4) 247.15 - 252.85

5 600 V 550 V (3) 547.3 - 552.6

(4) 544.0 - 555.9

RS-232 (DB9)

Female DB9 connector intended for serial communication.

AUTO (LED)

Indicator signalling that the multimeter is in AUTOMATIC mode.

In this mode, action on keys  and  is inoperative.

AUTO (pushbutton)

Pushbutton for switching the AUTO range selection to the MA-

NUAL range selection and vice versa.

In MANUAL mode, the choice of range is left to user initiative

using the keys  and  .

Unit display zone (LED)

This zone contains a display of the measurement units. It al-

so identiﬁ es the function selected by pressing the  or 

key.

AC-DC (pushbutton)

This key is used for selecting the measurement mode (DC, rms

AC or rms AC + DC).

Indicators below indicate the measurement mode:

DC: measurement of DC voltages

AC: measurement of RMS AC voltages

DC + AC: measurement of RMS AC+DC voltages.

 (pushbutton)

Pushbutton for selecting the next function.

 (pushbutton)

Pushbutton for selecting the previous function. On startup,

the unit switches automatically to the DC voltmeter, MANUAL

mode function and 600 voltrange.

Function Test

This test should help to verify, at certain intervals, the func-

tions of HM8012 without any great expenditure in measurement

instruments. To achieve thermal balance, the module and the

basic instrument, in its case, must be energized for at least 60

minutes before the test begins.

Measurement equipment used

Calibrator AC/DC for instance Fluke 5101B / Fluke 5700A /

Rotek 600

Resistors of 5 k , 50 k , 500 k 0.01% for instance model S102

J by Vishay

Resistors 500 k , 5 M 0.02%, for instance models CNS020 by

Vishay.

Test procedure

If one of the indicated calibrators is available or if precision cali-

brators are appropriate, all the HM8012 measurements ranges

can be checked using the following tables which indicate the

limit values. Recalibration, however, should only be performed

if the appropriate precision calibrator is available.

Before any change of ranges, ensure that the signal at HM8012

does not represent an unacceptable load of the object under

examination. For the link between the calibrator and HM8012,

shielded cables must be used to prevent any unwanted inﬂ u-

ence caused by the measurement signal.

8Subject to change without notice

Calibration

Calibration of the HM8012 digital multimeter is performed

mainly by software. In order to enter the calibration menu keep

both pushbuttons AUTO and BEEP depressed until the-

message CAL is displayed. After the release of both pushbut-

tons the ﬁ rst calibration step will be indicated. First the unit will

be shown then the value of the calibration voltage etc. which

has to be applied to the instrument. In this mode the following

pushbuttons will function as given:

Pushbutton Action

AUTO Corrected value of the range selected if the

LED is on, otherwise the input of the prece-

ding step will be displayed.

BEEP Displays not yet calibrated values. The LED

will be on, the value can be changed by pushbut-

ton .

 Change to the following calibration step.

 Change to the preceding calibration step.

AC+DC Saving the calibrated values.

Calibration procedure

1. Apply the calibration value speciﬁ ed.

2. Press BEEP . The former not yet corrected value will be

displayed. The LED will be on.

3. Press AUTO to perform the calibration, the corrected

value should be displayed.

4. Press  in order to proceed. (Pressing  will dis-

play the actual calibration information without moving to

another step.)

Please note:

In order to guarantee a fully calibrated instrument be sure to

perform a complete calibration cycle.

Hints:

– Pressing the AUTO pushbutton without the BEEP

pushbutton will display the value resulting from the pre-

ceding calibration; in case it is correct no calibration will

be necessary. Pressing AUTO again will return the in-

strument to the menu. Pressing either  or  the next or

the last calibration step will be accessed.

– For precise resistance calibration it is necessary to connect

the calibration resistors as closely to the input terminals

as possible.

– Pressing the AC/DC pushbutton will store the calibrated

values.

Listing of calibration steps

(*) Wait for complete stabilization of the display.

Calibration of frequency compensation

While observing the necessary safety precautions open the in-

strument. Select the 50 V AC range. Apply 25 V AC 15 kHz. Adjust

the capacitor CV1 until the display reads 25,000 ±5 digits.

Subject to change without notice

Circuit and layout diagrams

10 Subject to change without notice

Circuit and layout diagrams

Subject to change without notice

Circuit and layout diagrams

12 Subject to change without notice

Circuit and layout diagrams

Subject to change without notice

Circuit and layout diagrams

14 Subject to change without notice

Circuit and layout diagrams

Subject to change without notice

Circuit and layout diagrams

16 Subject to change without notice

Circuit and layout diagrams

Subject to change without notice

Circuit and layout diagrams

18 Subject to change without notice

Circuit and layout diagrams

Subject to change without notice

Circuit and layout diagrams

20 Subject to change without notice

Circuit and layout diagrams

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HAMEG HM 8012 User manual

Brand: HAMEG

Model: HM 8012

Category: Multimeters

Type: User manual

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HAMEG HM 8012 User manual

HAMEG HM 8012 User manual

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